• Sensor options for CO, H2S, and O2
• Patented electrochemical sensors and MSA-built button sensors
• Stainless steel and solid electrolyte construction virtually eliminate sensor leakage
• Automatically records the last 25 alarm/test events and can communicate data by connecting to MSA Link via built-in IR communication port
• No-miss triple alarm system includes bright flashing LEDs, piercing audible alarm, and an internal vibrating alarm
• Rubberized armor housing and one-button operation for maximum durability and simplicity